permaculture

[Christian Skiba <c.skiba@gmx.de>]

Hi Jeremy,

that sounds interesting.
And how about growing mushrooms in a combined walipini-root cellar when 
heated by the sun in summer?
Multifunctional!
:-)

Am 06.12.2018 um 03:05 schrieb jeremy baker via permaculture:
> It’s a interesting question Christian. A fun design idea popped to mind: a 
> sloped trench that is cool at the deep end and warmer at the entrance. 
> Natural convection and radiation would warm the space and cool the space. It 
> would be fairly stable due to the high mass around it. Cool things like food 
> could be stored in the deep end. The low roofed cold frame covering it could 
> slope into the ground as well. If your soil is easy digging, few rocks or 
> clay, and well drained then it’s very feasible. If it has a high water table 
> or prone to flooding, then that’s another matter. We have been using 45 mil 
> pond liner for living green roofs. The deep end could have a layer of pond 
> liner or ferrocement with some soil placed back over the top. Jeremy
>
>
> Sent from Yahoo Mail for iPad
>
>
> On Wednesday, December 5, 2018, 8:37 AM, Lawrence London 
> <lfljvenaura@gmail.com> wrote:
>
> If you are in Germany or Austria take a look at the root sellars high
> country dwellers use to store their produce during winter.
> Those who are too isolated to be able to bring in produce from towns nearby
> regularly will rely on root cellars that work reliably.
> Adding growhole/greenhouse production t one is a different matter. I would
> think you could to one or the other but not both.
> My Grandparents in Pittsboro NC USA had a bug below-ground cold frame with
> windows. They successfully stored two Ponderosa lemon trees (bushes)
> in big metal tubs in them each winter and brought them out in the spring.
> They bore grapefruit-sized flavorful lemons. They stored potatoes in their
> below ground, dirt floor and walls, basement. It was definitey not humid in
> that environment.
>
> On Wed, Dec 5, 2018 at 2:58 AM Christian Skiba <c.skiba@gmx.de> wrote:
>
> > Thanks Lawrence and Jeremy,
> >
> > yes, the root cellar is used for food storage only in winter.
> > Potatoes, apples, cabbage and celery for example need a humidity of
> > about 90 % at a temperature of 35-32°F.
> > So dry air is not really needed.
> > It will be build in the highlands, 750 m above sealevel, USDA plant
> > hardiness zone 6a.
> > My priority is to raise up the temperature in the greenhouse in winter.
> >
> > I give it a try and will inform you about the results.
> >
> >
> > Am 04.12.2018 um 17:48 schrieb jeremy baker via permaculture:
> > > This is Jeremy in Skagit Valley, WA. Living intimately with the
> > climactic variations of the year appeals to me. The concept of “season
> > extenders” is fun to play around with. Diving into the ground like a
> > tortoise or badger makes a lot of sense. I would hope a root cellar would
> > be about empty by the time it starts to warm up. Then the space might be
> > used for other things temporarily.
> > >    Perhaps dig a test hole and experiment with it. A friend showed me a
> > deep hole covered with tempered glass.  Inside he had several overwintering
> > house plants. I have several cans and buckets of paint that say “do not
> > freeze” on them. I’m thinking of digging a hole for them while I go to Baja
> > lol.  Jeremy
> > > Sent from Yahoo Mail for iPad
> > >
> > >
> > > On Monday, December 3, 2018, 12:54 AM, Christian Skiba <c.skiba@gmx.de>
> > wrote:
> > > Hello,
> > >
> > > I'm planning to build an underground greenhouse with an earth cellar.
> > >
> > > As benefits I see
> > > - more (earth-) heat radiating wall surface in winter
> > > - one instead of two construction sites (one big hole instead of two
> > > small ones)
> > > - possibly the use of CO2 from the storage crops for the greenhouse
> > > plants (during the day)
> > >
> > > I think in the summertime there must be a closed door between them to
> > > prevent the cellar to be heated by the greenhouse.
> > >
> > > Would you say that there are other advantages when combining this two
> > > elements?
> > >
> > > Are there any disadvantages?
> > >
> > > Greetings from Germany
> > > Christian
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